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1 /* | |
2 * Copyright 2016 Google Inc. | |
3 * | |
4 * Use of this source code is governed by a BSD-style license that can be | |
5 * found in the LICENSE file. | |
6 */ | |
7 | |
8 #ifndef SKSL_VARIABLE | |
9 #define SKSL_VARIABLE | |
10 | |
11 #include "SkSLModifiers.h" | |
12 #include "SkSLPosition.h" | |
13 #include "SkSLSymbol.h" | |
14 #include "SkSLType.h" | |
15 | |
16 namespace SkSL { | |
17 | |
18 /** | |
19 * Represents a variable, whether local, global, or a function parameter. This r epresents the | |
20 * variable itself (the storage location), which is shared between all VariableR eferences which | |
21 * read or write that storage location. | |
22 */ | |
23 struct Variable : public Symbol { | |
24 enum Storage { | |
25 kGlobal_Storage, | |
26 kLocal_Storage, | |
27 kParameter_Storage | |
28 }; | |
29 | |
30 Variable(Position position, Modifiers modifiers, std::string name, std::shar ed_ptr<Type> type, | |
31 Storage storage) | |
32 : INHERITED(position, kVariable_Kind, std::move(name)) | |
33 , fModifiers(modifiers) | |
34 , fType(type) | |
35 , fStorage(storage) | |
36 , fIsReadFrom(false) | |
37 , fIsWrittenTo(false) {} | |
38 | |
39 virtual std::string description() const override { | |
40 return fModifiers.description() + fType->fName + " " + fName; | |
41 } | |
42 | |
43 const Modifiers fModifiers; | |
44 const std::string fValue; | |
45 const std::shared_ptr<Type> fType; | |
46 const Storage fStorage; | |
47 | |
48 mutable bool fIsReadFrom; | |
dogben
2016/06/21 21:58:00
nit: Seems like fIsReadFrom and fIsWrittenTo don't
| |
49 mutable bool fIsWrittenTo; | |
50 | |
51 typedef Symbol INHERITED; | |
52 }; | |
53 | |
54 } // namespace SkSL | |
55 | |
56 namespace std { | |
57 template <> | |
58 struct hash<SkSL::Variable> { | |
59 public : | |
60 size_t operator()(const SkSL::Variable &var) const{ | |
61 return hash<std::string>()(var.fName) ^ hash<std::string>()(var.fTyp e->description()); | |
62 } | |
63 }; | |
64 } // namespace std | |
65 | |
66 #endif | |
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